[llvm] [BasicBlockSections] Apply path cloning with -basic-block-sections. (PR #68860)

[Sriraman Tallam via llvm-commits]

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@@ -99,6 +101,33 @@ static cl::opt<bool> BBSectionsDetectSourceDrift(
 
 namespace {
 
+MachineBasicBlock *CloneMachineBasicBlock(MachineBasicBlock *MBB) {
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tmsri wrote:

Why can't this be part of the IR itself, why not in BasicBlock.h?  

https://github.com/llvm/llvm-project/pull/68860